diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb81d2644..eb0214761 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,17 +9,16 @@ on:
 
 jobs:
   test:
-    runs-on: macos-13
+    runs-on: macos-15
     env:
       RUNALL: "true"
     steps:
       - name: Checkout code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-
       - name: Run tests
         run: swift test
   generator-tests:
-    runs-on: macos-13
+    runs-on: macos-15
     env:
       RUNALL: "true"
     steps:
@@ -29,7 +28,7 @@ jobs:
       - name: Run tests
         run: swift test --package-path ./generator
   generator-template-tests:
-    runs-on: macos-13
+    runs-on: macos-15
     steps:
       - name: Checkout code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
diff --git a/Package.swift b/Package.swift
index 35292fd26..c566f2b74 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.3
+// swift-tools-version:6.0
 
 import PackageDescription
 import Foundation
@@ -49,11 +49,13 @@ let practiceExerciseTargets: [Target] = practiceExercises.flatMap {
     return [
         .target(
             name:"\($0.pascalCased)", 
+            dependencies: [.product(name: "Numerics", package: "swift-numerics")],
             path:"./exercises/practice/\($0)/.meta/Sources"),
         .testTarget(
             name:"\($0.pascalCased)Tests", 
             dependencies: [
-                .target(name:"\($0.pascalCased)")
+                .target(name:"\($0.pascalCased)"),
+                .product(name: "Numerics", package: "swift-numerics")
             ], 
             path:"./exercises/practice/\($0)/Tests")
     ]
@@ -68,5 +70,6 @@ let package = Package(
             name: "xswift", 
             targets: allTargets.filter { $0.type == .regular }.map { $0.name })
     ],
+    dependencies: [.package(url: "https://github.com/apple/swift-numerics", from: "1.0.2")],
     targets: allTargets
 )
diff --git a/exercises/concept/bomb-defuser/.meta/Sources/BombDefuser/BombDefuserExemplar.swift b/exercises/concept/bomb-defuser/.meta/Sources/BombDefuser/BombDefuserExemplar.swift
index 63b33268f..c4ab55737 100644
--- a/exercises/concept/bomb-defuser/.meta/Sources/BombDefuser/BombDefuserExemplar.swift
+++ b/exercises/concept/bomb-defuser/.meta/Sources/BombDefuser/BombDefuserExemplar.swift
@@ -1,9 +1,11 @@
-let flip = { (tuple: (String, String, String)) -> (String, String, String) in
+typealias RotationClosure = @Sendable ((String, String, String)) -> (String, String, String)
+
+let flip: RotationClosure = { (tuple: (String, String, String)) -> (String, String, String) in
   let (a, b, c) = tuple
   return (b, a, c)
 }
 
-let rotate = { (tuple: (String, String, String)) -> (String, String, String) in
+let rotate: RotationClosure = { (tuple: (String, String, String)) -> (String, String, String) in
   let (a, b, c) = tuple
   return (b, c, a)
 }
diff --git a/exercises/concept/bomb-defuser/Tests/BombDefuserTests/BombDefuserTests.swift b/exercises/concept/bomb-defuser/Tests/BombDefuserTests/BombDefuserTests.swift
index 207d830ad..4a242a8f7 100644
--- a/exercises/concept/bomb-defuser/Tests/BombDefuserTests/BombDefuserTests.swift
+++ b/exercises/concept/bomb-defuser/Tests/BombDefuserTests/BombDefuserTests.swift
@@ -55,12 +55,4 @@ final class BombDefuserTests: XCTestCase {
       stringify(expected), stringify(got),
       "shuffle(0, (\"Brown\", \"Orange\", \"White\")): Expected \(expected), got \(got)")
   }
-
-  static var allTests = [
-    ("testFlip", testFlip),
-    ("testRotate", testRotate),
-    ("testShuffle1", testShuffle1),
-    ("testShuffle2", testShuffle2),
-    ("testShuffle3", testShuffle3),
-  ]
 }
diff --git a/exercises/concept/bomb-defuser/Tests/BombDefuserTests/XCTestManifests.swift b/exercises/concept/bomb-defuser/Tests/BombDefuserTests/XCTestManifests.swift
deleted file mode 100644
index 4f3db4589..000000000
--- a/exercises/concept/bomb-defuser/Tests/BombDefuserTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(BombDefuserTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/bomb-defuser/Tests/LinuxMain.swift b/exercises/concept/bomb-defuser/Tests/LinuxMain.swift
deleted file mode 100644
index e46f25037..000000000
--- a/exercises/concept/bomb-defuser/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import BombDefuserTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += BombDefuserTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/high-score-board/Tests/HighScoreBoardTests/HighScoreBoardTests.swift b/exercises/concept/high-score-board/Tests/HighScoreBoardTests/HighScoreBoardTests.swift
index 041184094..40625c84a 100644
--- a/exercises/concept/high-score-board/Tests/HighScoreBoardTests/HighScoreBoardTests.swift
+++ b/exercises/concept/high-score-board/Tests/HighScoreBoardTests/HighScoreBoardTests.swift
@@ -140,16 +140,4 @@ final class HighScoreBoardTests: XCTestCase {
       "Expected: \(expected)\nGot: \(got)\norderByPlayers should return the key/value pairs odered ascending by the player's score."
     )
   }
-
-  static var allTests = [
-    ("testEmptyScores", testEmptyScores),
-    ("testAddPlayerExplicit", testAddPlayerExplicit),
-    ("testAddPlayerDefault", testAddPlayerDefault),
-    ("testRemovePlayer", testRemovePlayer),
-    ("testRemoveNonexistentPlayer", testRemoveNonexistentPlayer),
-    ("testResetScore", testResetScore),
-    ("testUpdateScore", testUpdateScore),
-    ("testOrderByPlayers", testOrderByPlayers),
-    ("testOrderByScores", testOrderByScores),
-  ]
 }
diff --git a/exercises/concept/high-score-board/Tests/HighScoreBoardTests/XCTestManifests.swift b/exercises/concept/high-score-board/Tests/HighScoreBoardTests/XCTestManifests.swift
deleted file mode 100644
index 27fdffe3a..000000000
--- a/exercises/concept/high-score-board/Tests/HighScoreBoardTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(HighScoreBoardTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/high-score-board/Tests/LinuxMain.swift b/exercises/concept/high-score-board/Tests/LinuxMain.swift
deleted file mode 100644
index a05b76cc1..000000000
--- a/exercises/concept/high-score-board/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import HighScoreBoardTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += HighScoreBoardTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/LasagnaMasterTests.swift b/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/LasagnaMasterTests.swift
index 30d17de50..d3996f123 100644
--- a/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/LasagnaMasterTests.swift
+++ b/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/LasagnaMasterTests.swift
@@ -81,18 +81,4 @@ final class LasagnaMasterTests: XCTestCase {
         layers: "sauce", "noodles", "béchamel", "meat", "mozzarella", "noodles", "sauce", "ricotta",
         "eggplant", "mozzarella", "béchamel", "noodles", "meat", "sauce", "mozzarella"))
   }
-
-  static var allTests = [
-    ("testRemainingMinutesExplicit", testRemainingMinutesExplicit),
-    ("testRemainingMinutesDefault", testRemainingMinutesDefault),
-    ("testPreparationTime", testPreparationTime),
-    ("testPreparationTimeEmpty", testPreparationTimeEmpty),
-    ("testQuantities", testQuantities),
-    ("testQuantitiesNoSauce", testQuantitiesNoSauce),
-    ("testQuantitiesNoNoodles", testQuantitiesNoNoodles),
-    ("testToOz", testToOz),
-    ("testRedWineRedInequalLayerCount", testRedWineRedInequalLayerCount),
-    ("testRedWineRedEqualLayerCount", testRedWineRedEqualLayerCount),
-    ("testRedWineWhite", testRedWineWhite),
-  ]
 }
diff --git a/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/XCTestManifests.swift b/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/XCTestManifests.swift
deleted file mode 100644
index 86ffcbced..000000000
--- a/exercises/concept/lasagna-master/Tests/LasagnaMasterTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(LasagnaMasterTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/lasagna-master/Tests/LinuxMain.swift b/exercises/concept/lasagna-master/Tests/LinuxMain.swift
deleted file mode 100644
index 5b59f7b4d..000000000
--- a/exercises/concept/lasagna-master/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import LasagnaMasterTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += LasagnaMasterTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/log-lines/Tests/LinuxMain.swift b/exercises/concept/log-lines/Tests/LinuxMain.swift
deleted file mode 100644
index 2c9cdfc78..000000000
--- a/exercises/concept/log-lines/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import LogLinesTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += LogLinesTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/log-lines/Tests/LogLinesTests/LogLinesTests.swift b/exercises/concept/log-lines/Tests/LogLinesTests/LogLinesTests.swift
index a99521299..0276c4a95 100644
--- a/exercises/concept/log-lines/Tests/LogLinesTests/LogLinesTests.swift
+++ b/exercises/concept/log-lines/Tests/LogLinesTests/LogLinesTests.swift
@@ -95,22 +95,4 @@ final class LogLinesTests: XCTestCase {
     let message = "Wha happon?"
     XCTAssertEqual(LogLevel.unknown.shortFormat(message: message), "42:Wha happon?")
   }
-
-  static var allTests = [
-    ("testInitTrace", testInitTrace),
-    ("testInitDebug", testInitDebug),
-    ("testInitInfo", testInitInfo),
-    ("testInitWarning", testInitWarning),
-    ("testInitError", testInitError),
-    ("testInitFatal", testInitFatal),
-    ("testInitUnknownEmpty", testInitUnknownEmpty),
-    ("testInitUnknownNonStandard", testInitUnknownNonStandard),
-    ("testShortTrace", testShortTrace),
-    ("testShortDebug", testShortDebug),
-    ("testShortInfo", testShortInfo),
-    ("testShortWarning", testShortWarning),
-    ("testShortError", testShortError),
-    ("testShortFatal", testShortFatal),
-    ("testShortUnknownEmpty", testShortUnknownEmpty),
-  ]
 }
diff --git a/exercises/concept/log-lines/Tests/LogLinesTests/XCTestManifests.swift b/exercises/concept/log-lines/Tests/LogLinesTests/XCTestManifests.swift
deleted file mode 100644
index 2b5cb9ee5..000000000
--- a/exercises/concept/log-lines/Tests/LogLinesTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(LogLinesTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/magician-in-training/Tests/LinuxMain.swift b/exercises/concept/magician-in-training/Tests/LinuxMain.swift
deleted file mode 100644
index 4e9800ff5..000000000
--- a/exercises/concept/magician-in-training/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import MagicianInTrainingTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += MagicianInTrainingTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/MagicianInTrainingTests.swift b/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/MagicianInTrainingTests.swift
index fefb02a97..f5bd8d04f 100644
--- a/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/MagicianInTrainingTests.swift
+++ b/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/MagicianInTrainingTests.swift
@@ -112,24 +112,4 @@ final class MagicianInTrainingTests: XCTestCase {
     let stack = [7, 3, 7, 1, 5, 5, 3, 9, 9]
     XCTAssertEqual(evenCardCount(stack), 0)
   }
-
-  static var allTests = [
-    ("testGetCard", testGetCard),
-    ("testSetCard", testSetCard),
-    ("testSetCardIndexTooLow", testSetCardIndexTooLow),
-    ("testSetCardIndexTooHigh", testSetCardIndexTooHigh),
-    ("testInsertAtTop", testInsertAtTop),
-    ("testRemoveCard", testRemoveCard),
-    ("testRemoveCardIndexTooLow", testRemoveCardIndexTooLow),
-    ("testRemoveCardIndexTooHigh", testRemoveCardIndexTooHigh),
-    ("testRemoveTopCard", testRemoveTopCard),
-    ("testRemoveTopCardFromEmptyStack", testRemoveTopCardFromEmptyStack),
-    ("testInsertAtBottom", testInsertAtBottom),
-    ("testRemoveBottomCard", testRemoveBottomCard),
-    ("testRemoveBottomCardFromEmptyStack", testRemoveBottomCardFromEmptyStack),
-    ("testCheckSizeTrue", testCheckSizeTrue),
-    ("testCheckSizeFalse", testCheckSizeFalse),
-    ("testEvenCardCount", testEvenCardCount),
-    ("testEvenCardCountZero", testEvenCardCountZero),
-  ]
 }
diff --git a/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/XCTestManifests.swift b/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/XCTestManifests.swift
deleted file mode 100644
index b1ebd20f7..000000000
--- a/exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(MagicianInTrainingTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/master-mixologist/Tests/LinuxMain.swift b/exercises/concept/master-mixologist/Tests/LinuxMain.swift
deleted file mode 100644
index 038543cb7..000000000
--- a/exercises/concept/master-mixologist/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import MasterMixologistTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += MasterMixologistTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/master-mixologist/Tests/MasterMixologistTests/MasterMixologistTests.swift b/exercises/concept/master-mixologist/Tests/MasterMixologistTests/MasterMixologistTests.swift
index ef2b59e43..ff87b68ca 100644
--- a/exercises/concept/master-mixologist/Tests/MasterMixologistTests/MasterMixologistTests.swift
+++ b/exercises/concept/master-mixologist/Tests/MasterMixologistTests/MasterMixologistTests.swift
@@ -153,20 +153,4 @@ final class MasterMixologistTests: XCTestCase {
       checkTest(e: expectedBeers, g: got.beer) && checkTest(e: expectedSodas, g: got.soda),
       "Expected (beer: nil, soda: nil), got: \(got)")
   }
-
-  static var allTests = [
-    ("testTimeToPrepare", testTimeToPrepare),
-    ("testMakeWedges", testMakeWedges),
-    ("testMakeWedgesNoNeed", testMakeWedgesNoNeed),
-    ("testMakeWedgesNoLimes", testMakeWedgesNoLimes),
-    ("testMakeWedgesTooFewLimes", testMakeWedgesTooFewLimes),
-    ("testFinishShift", testFinishShift),
-    ("testFinishShiftJustRunOver", testFinishShiftJustRunOver),
-    ("testFinishShiftLeaveEarly", testFinishShiftLeaveEarly),
-    ("testOrderTracker", testOrderTracker),
-    ("testOrderOneEach", testOrderOneEach),
-    ("testOrderTrackerNoBeer", testOrderTrackerNoBeer),
-    ("testOrderTrackerNoSoda", testOrderTrackerNoSoda),
-    ("testOrderTrackerNils", testOrderTrackerNils),
-  ]
 }
diff --git a/exercises/concept/master-mixologist/Tests/MasterMixologistTests/XCTestManifests.swift b/exercises/concept/master-mixologist/Tests/MasterMixologistTests/XCTestManifests.swift
deleted file mode 100644
index 5c4947c8d..000000000
--- a/exercises/concept/master-mixologist/Tests/MasterMixologistTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(MasterMixologistTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/pizza-slices/Tests/LinuxMain.swift b/exercises/concept/pizza-slices/Tests/LinuxMain.swift
deleted file mode 100644
index 2d46426d6..000000000
--- a/exercises/concept/pizza-slices/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import PizzaSlicesTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += PizzaSlicesTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/PizzaSlicesTests.swift b/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/PizzaSlicesTests.swift
index 4f7e918d3..3a0475c2d 100644
--- a/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/PizzaSlicesTests.swift
+++ b/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/PizzaSlicesTests.swift
@@ -71,19 +71,4 @@ final class PizzaSlicesTests: XCTestCase {
     let biggest = biggestSlice(diameterA: "0", slicesA: "8", diameterB: "16 inches", slicesB: "8")
     XCTAssertEqual(biggest, "Slice A is bigger")
   }
-
-  static var allTests = [
-    ("testSliceNormal", testSliceNormal),
-    ("testSliceNilDiameter", testSliceNilDiameter),
-    ("testSliceNilSlices", testSliceNilSlices),
-    ("testSliceBadDiameter", testSliceBadDiameter),
-    ("testSliceBadSlices", testSliceBadSlices),
-    ("testABiggest", testABiggest),
-    ("testBBiggest", testBBiggest),
-    ("testBothSame", testBothSame),
-    ("testANil", testANil),
-    ("testBNil", testBNil),
-    ("testBothNil", testBothNil),
-    ("testZeroIsValid", testZeroIsValid),
-  ]
 }
diff --git a/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/XCTestManifests.swift b/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/XCTestManifests.swift
deleted file mode 100644
index a37a77a60..000000000
--- a/exercises/concept/pizza-slices/Tests/PizzaSlicesTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(PizzaSlicesTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/poetry-club/Tests/LinuxMain.swift b/exercises/concept/poetry-club/Tests/LinuxMain.swift
deleted file mode 100644
index 32c4ce62f..000000000
--- a/exercises/concept/poetry-club/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import PoetryClubTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += PoetryClubTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/poetry-club/Tests/PoetryClubTests/PoetryClubTests.swift b/exercises/concept/poetry-club/Tests/PoetryClubTests/PoetryClubTests.swift
index e77d69c1c..433168cdb 100644
--- a/exercises/concept/poetry-club/Tests/PoetryClubTests/PoetryClubTests.swift
+++ b/exercises/concept/poetry-club/Tests/PoetryClubTests/PoetryClubTests.swift
@@ -79,20 +79,4 @@ final class PoetryClubTests: XCTestCase {
     try XCTSkipIf(true && !runAll)  // change true to false to run this test
     XCTAssertEqual(secretRoomPassword("Open Sesame"), "OPEN SESAME!")
   }
-
-  static var allTests = [
-    ("testSplitNewlines", testSplitNewlines),
-    ("testSplitNoNewlines", testSplitNoNewlines),
-    ("testFirstLetter", testFirstLetter),
-    ("testFirstLetterEmpty", testFirstLetterEmpty),
-    ("testCapitalize", testCapitalize),
-    ("testTrimWithWhitespace", testTrimWithWhitespace),
-    ("testTrimWithoutWhitespace", testTrimWithoutWhitespace),
-    ("testLastLetter", testLastLetter),
-    ("testLastLetterEmpty", testLastLetterEmpty),
-    ("testBackdoorPassword", testBackdoorPassword),
-    ("testIthLetter", testIthLetter),
-    ("testIthLetterInvalid", testIthLetterInvalid),
-    ("testSecretRoomPassword", testSecretRoomPassword),
-  ]
 }
diff --git a/exercises/concept/poetry-club/Tests/PoetryClubTests/XCTestManifests.swift b/exercises/concept/poetry-club/Tests/PoetryClubTests/XCTestManifests.swift
deleted file mode 100644
index 1c316f6b3..000000000
--- a/exercises/concept/poetry-club/Tests/PoetryClubTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(PoetryClubTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/santas-helper/Tests/LinuxMain.swift b/exercises/concept/santas-helper/Tests/LinuxMain.swift
deleted file mode 100644
index ea1c942fd..000000000
--- a/exercises/concept/santas-helper/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import SantasHelperTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += SantasHelperTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/santas-helper/Tests/SantasHelperTests/SantasHelperTests.swift b/exercises/concept/santas-helper/Tests/SantasHelperTests/SantasHelperTests.swift
index d9507134f..1b7f17049 100644
--- a/exercises/concept/santas-helper/Tests/SantasHelperTests/SantasHelperTests.swift
+++ b/exercises/concept/santas-helper/Tests/SantasHelperTests/SantasHelperTests.swift
@@ -47,9 +47,4 @@ final class SantasHelperTests: XCTestCase {
         && actual.recipients == recipients
     )
   }
-  static var allTests = [
-    ("testCartesianToPolar", testCartesianToPolar),
-    ("testCartesianToPolarQ3", testCartesianToPolarQ3),
-    ("testCombineRecords", testCombineRecords),
-  ]
 }
diff --git a/exercises/concept/santas-helper/Tests/SantasHelperTests/XCTestManifests.swift b/exercises/concept/santas-helper/Tests/SantasHelperTests/XCTestManifests.swift
deleted file mode 100644
index b397e4869..000000000
--- a/exercises/concept/santas-helper/Tests/SantasHelperTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(SantasHelperTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/secret-agent/Tests/LinuxMain.swift b/exercises/concept/secret-agent/Tests/LinuxMain.swift
deleted file mode 100644
index 75e8a0f09..000000000
--- a/exercises/concept/secret-agent/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import SecretAgentTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += SecretAgentTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/secret-agent/Tests/SecretAgentTests/SecretAgentTests.swift b/exercises/concept/secret-agent/Tests/SecretAgentTests/SecretAgentTests.swift
index dd0a25c96..407a962ad 100644
--- a/exercises/concept/secret-agent/Tests/SecretAgentTests/SecretAgentTests.swift
+++ b/exercises/concept/secret-agent/Tests/SecretAgentTests/SecretAgentTests.swift
@@ -34,11 +34,4 @@ final class SecretAgentTests: XCTestCase {
       })
     XCTAssertTrue(combo == (234, 91, 148))
   }
-
-  static var allTests = [
-    ("testPasswordSuccess", testPasswordSuccess),
-    ("testPasswordFail", testPasswordFail),
-    ("testCombination1", testCombination1),
-    ("testCombination2", testCombination2),
-  ]
 }
diff --git a/exercises/concept/secret-agent/Tests/SecretAgentTests/XCTestManifests.swift b/exercises/concept/secret-agent/Tests/SecretAgentTests/XCTestManifests.swift
deleted file mode 100644
index 904c816d8..000000000
--- a/exercises/concept/secret-agent/Tests/SecretAgentTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(SecretAgentTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/concept/vehicle-purchase/.docs/instructions.md b/exercises/concept/vehicle-purchase/.docs/instructions.md
index f9e937cfa..72605a19d 100644
--- a/exercises/concept/vehicle-purchase/.docs/instructions.md
+++ b/exercises/concept/vehicle-purchase/.docs/instructions.md
@@ -9,15 +9,17 @@ You have three tasks, one to determine if you will need one to help you choose b
 The auto dealers in your town are all running a five year, 0% interest promotion that you would like to take advantage of.
 But you are not sure if you can afford the monthly payments on the car you want.
 
+The monthly payment is the cars total price divided by the number of months under the five year period.
+
 Implement the `canIBuy(vehicle:price:monthlyBudget:)` function that takes the following arguments:
 - `vehicle` - The name of the vehicle you want to buy.
 - `price` - The price of the vehicle you want to buy.
 - `monthlyBudget` - The amount of money you can afford to pay each month.
 
 The function should return the following message based on the following conditions:
-- If the price of the vehicle is less than or equal to the monthly budget, return the message `"Yes! I'm getting a <vehicle>"`.
-- If the price of the vehicle is 10% above your monthly budget, return the message `"I'll have to be frugal if I want a <vehicle>"`.
-- If the price of the vehicle is more than 10% above your monthly budget, return the message `"Darn! No <vehicle> for me"`.
+- If the monthly payment of the vehicle is less than or equal to the monthly budget, return the message `"Yes! I'm getting a <vehicle>"`.
+- If the monthly payment of the vehicle is above your monthly budget by up to 10% (inclusive), return the message `"I'll have to be frugal if I want a <vehicle>"`.
+- If the monthly payment of the vehicle is more than 10% above your monthly budget, return the message `"Darn! No <vehicle> for me"`.
 
 ```swift
 canIBuy(vehicle: "1974 Ford Pinto", price: 516.32, monthlyBudget: 100.00)
diff --git a/exercises/concept/windowing-system/.meta/Sources/WindowingSystem/WindowingSystemExemplar.swift b/exercises/concept/windowing-system/.meta/Sources/WindowingSystem/WindowingSystemExemplar.swift
index fc46fe84b..6cc4a2946 100644
--- a/exercises/concept/windowing-system/.meta/Sources/WindowingSystem/WindowingSystemExemplar.swift
+++ b/exercises/concept/windowing-system/.meta/Sources/WindowingSystem/WindowingSystemExemplar.swift
@@ -18,7 +18,7 @@ struct Size {
   }
 }
 
-class Window {
+class Window: @unchecked Sendable  {
   var title = "New Window"
   let screenSize = Size(width: 800, height: 600)
   var size = Size()
diff --git a/exercises/concept/windowing-system/Tests/LinuxMain.swift b/exercises/concept/windowing-system/Tests/LinuxMain.swift
deleted file mode 100644
index d70d97404..000000000
--- a/exercises/concept/windowing-system/Tests/LinuxMain.swift
+++ /dev/null
@@ -1,6 +0,0 @@
-import WindowingSystemTests
-import XCTest
-
-var tests = [XCTestCaseEntry]()
-tests += WindowingSystemTests.allTests()
-XCTMain(tests)
diff --git a/exercises/concept/windowing-system/Tests/WindowingSystemTests/WindowingSystemTests.swift b/exercises/concept/windowing-system/Tests/WindowingSystemTests/WindowingSystemTests.swift
index 2c7c875f3..dc590a428 100644
--- a/exercises/concept/windowing-system/Tests/WindowingSystemTests/WindowingSystemTests.swift
+++ b/exercises/concept/windowing-system/Tests/WindowingSystemTests/WindowingSystemTests.swift
@@ -158,18 +158,4 @@ final class WindowingSystemTests: XCTestCase {
       window.display(),
       "New Window\nPosition: (0, 0), Size: (80 x 60)\n[This window intentionally left blank]\n")
   }
-
-  static var allTests = [
-    ("testNewWindow", testNewWindow),
-    ("testMainWindow", testMainWindow),
-    ("testMoveValid", testMoveValid),
-    ("testMoveTooFar", testMoveTooFar),
-    ("testMoveNegative", testMoveNegative),
-    ("testResizeValid", testResizeValid),
-    ("testResizeTooFar", testResizeTooFar),
-    ("testResizeNegative", testResizeNegative),
-    ("testUpdateTitle", testUpdateTitle),
-    ("testUpdateText", testUpdateText),
-    ("testUpdateTextNil", testUpdateTextNil),
-  ]
 }
diff --git a/exercises/concept/windowing-system/Tests/WindowingSystemTests/XCTestManifests.swift b/exercises/concept/windowing-system/Tests/WindowingSystemTests/XCTestManifests.swift
deleted file mode 100644
index 73d76229e..000000000
--- a/exercises/concept/windowing-system/Tests/WindowingSystemTests/XCTestManifests.swift
+++ /dev/null
@@ -1,9 +0,0 @@
-import XCTest
-
-#if !canImport(ObjectiveC)
-  public func allTests() -> [XCTestCaseEntry] {
-    return [
-      testCase(WindowingSystemTests.allTests)
-    ]
-  }
-#endif
diff --git a/exercises/practice/matrix/Sources/Matrix/Matrix.swift b/exercises/practice/matrix/Sources/Matrix/Matrix.swift
index 78bc9bcf7..0f71a9cbd 100644
--- a/exercises/practice/matrix/Sources/Matrix/Matrix.swift
+++ b/exercises/practice/matrix/Sources/Matrix/Matrix.swift
@@ -1,27 +1,3 @@
 struct Matrix {
-
-  let rows: [[Int]]
-  let columns: [[Int]]
-
-  init(_ stringRepresentation: String) {
-    var rows = [[Int]]()
-    var columns = [[Int]]()
-
-    let rowItems = stringRepresentation.split(separator: "\n")
-    for item in rowItems {
-      let elements = item.split(separator: " ").compactMap { Int(String($0)) }
-      rows.append(elements)
-    }
-    for i in 0..<rows[0].count {
-      var column = [Int]()
-      for row in rows {
-        column.append(row[i])
-      }
-
-      columns.append(column)
-    }
-
-    self.rows = rows
-    self.columns = columns
-  }
+  // Write your code for the 'Matrix' exercise in this file.
 }
diff --git a/generator/Package.swift b/generator/Package.swift
index 318d64f6c..63701123f 100644
--- a/generator/Package.swift
+++ b/generator/Package.swift
@@ -6,12 +6,12 @@ import PackageDescription
 let package = Package(
   name: "Generator",
   platforms: [
-      .macOS(.v10_15) // Set the minimum macOS version to 10.15 or any version greater than 10.15.
+      .macOS(.v12) // Set the minimum macOS version to 10.15 or any version greater than 10.15.
   ],
   dependencies: [
     .package(url: "https://github.com/stencilproject/Stencil.git", from: "0.15.1"),
     .package(url: "https://github.com/LebJe/TOMLKit.git", from: "0.5.5"),
-    .package(url: "https://github.com/apple/swift-format", from: "508.0.1"),
+    .package(url: "https://github.com/apple/swift-format", from: "600.0.0"),
   ],
   targets: [
     // Targets are the basic building blocks of a package. A target can define a module or a test suite.
diff --git a/generator/Sources/Generator/generator-help.swift b/generator/Sources/Generator/generator-help.swift
index 76c19e46b..0c3aa21d8 100644
--- a/generator/Sources/Generator/generator-help.swift
+++ b/generator/Sources/Generator/generator-help.swift
@@ -25,7 +25,7 @@ class GeneratorHelp {
     } catch {
       throw GeneratorError.remoteError("No remote file found")
     }
-    let data = try String(contentsOf: url) ?? ""
+    let data = try String(contentsOf: url, encoding: .utf8)
     let fileData = Data(data.utf8)
     json = try JSONSerialization.jsonObject(with: fileData, options: []) as? [String: Any] ?? [:]
   }
diff --git a/generator/Sources/Generator/main.swift b/generator/Sources/Generator/main.swift
index b5db548dc..3134ba795 100644
--- a/generator/Sources/Generator/main.swift
+++ b/generator/Sources/Generator/main.swift
@@ -1,7 +1,6 @@
 import Foundation
 import Stencil
 import SwiftFormat
-import SwiftFormatConfiguration
 
 enum GeneratorError: Error {
   case invalidArgumentCount
@@ -42,7 +41,7 @@ class Generator {
     var text = ""
     let configuration = Configuration()
     let swiftFormat = SwiftFormatter(configuration: configuration)
-    try swiftFormat.format(source: template, assumingFileURL: nil, to: &text)
+    try swiftFormat.format(source: template, assumingFileURL: nil, selection: .infinite, to: &text)
     try text.write(toFile: path, atomically: true, encoding: .utf8)
   }
 
diff --git a/generator/Tests/GeneratorTests/GeneratorTests.swift b/generator/Tests/GeneratorTests/GeneratorTests.swift
index 6909c9a16..26da747c0 100644
--- a/generator/Tests/GeneratorTests/GeneratorTests.swift
+++ b/generator/Tests/GeneratorTests/GeneratorTests.swift
@@ -1,25 +1,26 @@
-import XCTest
+import Testing
 @testable import Generator
 
-class GeneratorTests: XCTestCase {
-    func testAllTestsIncluded() {
-        let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/all-tests-included")
-        XCTAssertNoThrow(try generatorHelp.toml())
-        let expected = ["1cf3e15a-a3d7-4a87-aeb3-ba1b43bc8dce", "3549048d-1a6e-4653-9a79-b0bda163e8d5", "b4c6dbb8-b4fb-42c2-bafd-10785abe7709"]
-        XCTAssertEqual(generatorHelp.uuids, expected)
-    }
+@Test("Testing having all tests be included")
+func testAllTestsIncluded() {
+    let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/all-tests-included")
+    #expect(throws: Never.self) {try generatorHelp.toml()}
+    let expected = ["1cf3e15a-a3d7-4a87-aeb3-ba1b43bc8dce", "3549048d-1a6e-4653-9a79-b0bda163e8d5", "b4c6dbb8-b4fb-42c2-bafd-10785abe7709"]
+    #expect(generatorHelp.uuids == expected)
+}
 
-    func testAllTestsRemoved() {
-        let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/all-test-removed")
-        XCTAssertNoThrow(try generatorHelp.toml())
-        let expected: [String] = []
-        XCTAssertEqual(generatorHelp.uuids, expected)
-    }
+@Test("Testing having all tests be removed")
+func testAllTestsRemoved() {
+    let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/all-test-removed")
+    #expect(throws: Never.self) {try generatorHelp.toml()}
+    let expected: [String] = []
+    #expect(generatorHelp.uuids == expected)
+}
 
-    func testTwoTestsRemoved() {
-        let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/two-tests-removed")
-        XCTAssertNoThrow(try generatorHelp.toml())
-        let expected = ["b4c6dbb8-b4fb-42c2-bafd-10785abe7709"]
-        XCTAssertEqual(generatorHelp.uuids, expected)
-    }
+@Test("Testing having two tests be removed")
+func testTwoTestsRemoved() {
+    let generatorHelp = GeneratorHelp(exercise: "two-fer", filePath: "./Tests/GeneratorTests/files/two-tests-removed")
+    #expect(throws: Never.self) {try generatorHelp.toml()}
+    let expected = ["b4c6dbb8-b4fb-42c2-bafd-10785abe7709"]
+    #expect(generatorHelp.uuids == expected)
 }